Making of rayon



Dec. 17, 1935. v E R, BEATTEY 2,024,962

MAKING OF RAYON Filed May ze, 1955 ATM ' the same up,

Patented Dec. 17, 1935 nazisti UNITED STATES FATENT OFFICE 2,024,962MAKING 0F RAYON Earle J. Richard Beattey, Edgewood, It. I.

This invention relates largely its objects the thread composed has forone of thread which, when Application May 26,

2 Claims.

to the production of a of rayon filaments, and provision of a Woven intoa fabric, will chemical manner, rayon the desired non-creasing filamentsin order that result may be obtained.

Another object of the invention is to so relate the rayon filaments givesupport one to bined elasticity may of a thread that they will the otherthat their combe brought into play for causing `these threads to resumea normal uncreased condition when Woven into fabric so that if a rayonfabric becomes wrinkled upon hanging the wrinkles will come out of thefabric in the same manner that they come out of fabrics made of animalfibers such as Wool and natural silk.

Another object the rayon filaments of the invention is to support by athread or core of a different material in order that the compositethread may be straightened as ities and be better suited for to itselastic qualthe production of woven fabrics and garments therefrom.

A further object of the sion of a supporting core invention is theprovifor a composite thread and the forcing of the rayon laments towardthis core and into close contact therewith that these rayon filamentsmay be better supported and a composite thread provided having moredesirable qualities for weaving into fabrics and formation of garmentstherefrom.

With these and other objects in view, the invention consists of certainnovel features of construction, as will be more fully described, and

particularly pointed out in the appended claims.

In the accompanying drawing: Fig. l is a side elevation partly insection and largely diagrammatic for forming rayon shown therein.

Fig. 2 is a sectional of the layout of a machine filaments with myinvention view through the spinneret and also diagrammatically showingmy improved member in section for condensing the plurality of rayonfilaments extruded through the spinneret.

cross-section of when my condensing filaments as they would appeardevise is. mit used- 1933, Serial No. 672,972

(o1. is-c) In the use of rayon, which is a cellulose product usuallyformed by the viscose process using Wood pulp as the supply ofcellulose, when formed into a garment it is found that the garmentbecomes creased through Wear and whereas, when a 5 garment is made ofsilk or Wool the hanging of the same upon a form or suitable supportusually causes these wrinkles or creases to come out of the garmentthat, with the use of rayon these creases remain set to a far greaterextent and l0 will not disappear from the garment under such similartreatment, and I have attributed this to the air spaces present in anyrayon thread hetvveen the filaments thereof which occur to a far greaterextent in a rayon thread than they do l5 in a silk thread, and I findthat by manipulating the filaments of these rayon threads by twisting orthe like after formed I do not materially reduce this air space to anyeffective extent as the filaments seem to be set in a certain spaced 20relation after they emerge from the coagulating bath and attain theirfinished or formed state. This possibly may be by reason of the factthat the coagulating baths which contain other sulphate salts as Well assulphuric acid cause the indentation of these filaments and an irregularformation and thus provide a multiplicity of air pockets. Further theindividual rayon filaments possess but a relatively small amount ofelasticity and thus in this spaced relation they cannot supportthemselves against creasings of a fabric when they are woven into thisform and the fabric formed into a garment, and in order that this effectmay be minimized to a material extent I have provided a means forforcing the fibers close together before they become set and While in arather gelatinous state in the coagulating bath which, at this time,permits of their being molded or set closer together, and the air spacesabout the fibers reduced so that as they emerge 40 from the coagulatingbath they are in an assembled and supported condition to better assisteach other in the elasticity which they have and resist the strains offolding or creasing to a far better extent, and in order that thisproperty may 5 be further enhanced I may insert a core of thread formedof fibers of an animal nature such as silk or Wool, or even fibers ofany supporting material that the desired properties minimizing creasing,when the thread is formed in a fabric, may be had, and the following isa detailed description of the present embodiment of this inventionillustrating the preferred means by which these advantageous results maybe accomplished.

With reference to the drawing I have illustrated in Fig. 1 a portion ofis used This cellulose mixture is forced by a suitable pump 1n the usualmanner through the candle engaging the'collar member I7 along thethreads I8 to hold the same in engagement with the glass tube throughthe packing I9 as illustrated in Fig.

This spinneret is provided with a multiplicity ture or viscose 2| isforced coagulating bath II and thence is carried up through the guide 22over a pulley 23 and into a aringportion 24 of the traverse tube 25reciprocated by creased or folded. this elastic action may also bemethod. This thread or core the tube I3 and through the spinneret I4having Also a thin film o1' rayonmay be formed as-a coat- By thisarrangement ka composite thread isV provided which Will havethe combinedelasticity of the different elements crowded one in close contact withthe otheriand intocontact with the core of different material and willbe better for knitting or fabrics where sharp bends occur.

by the terms of the I claim:

1. In an apparatus formaking rayon, a coagulating bath, a spinnerettherein,

appended claims.

their extrusion fromfsaid spinneret.

2. In an apparatus fonmaking rayon, Ia coagulating bath, a -spin-neretthereinfand `a :member having entrance and discharge openings of difsionfrom said spinneret.

EARLE J. RICHARD BEATYIEY;

